TW351474U - Novel device to enhance image illuminance and evenness - Google Patents

Novel device to enhance image illuminance and evenness

Info

Publication number
TW351474U
TW351474U TW086216591U TW86216591U TW351474U TW 351474 U TW351474 U TW 351474U TW 086216591 U TW086216591 U TW 086216591U TW 86216591 U TW86216591 U TW 86216591U TW 351474 U TW351474 U TW 351474U
Authority
TW
Taiwan
Prior art keywords
evenness
novel device
enhance image
image illuminance
illuminance
Prior art date
Application number
TW086216591U
Other languages
Chinese (zh)
Inventor
zhen-cai Cai
Original Assignee
Mustek Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mustek Systems Inc filed Critical Mustek Systems Inc
Priority to TW086216591U priority Critical patent/TW351474U/en
Priority to US09/163,786 priority patent/US6049433A/en
Publication of TW351474U publication Critical patent/TW351474U/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/10—Bifocal lenses; Multifocal lenses
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2053—Intensity control of illuminating light
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
    • H04N1/02845—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array
    • H04N1/0287—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array using a tubular lamp or a combination of such lamps
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
    • H04N1/02885—Means for compensating spatially uneven illumination, e.g. an aperture arrangement

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Facsimile Scanning Arrangements (AREA)
TW086216591U 1997-09-30 1997-09-30 Novel device to enhance image illuminance and evenness TW351474U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TW086216591U TW351474U (en) 1997-09-30 1997-09-30 Novel device to enhance image illuminance and evenness
US09/163,786 US6049433A (en) 1997-09-30 1998-09-30 Device for equalizing light strength of light source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW086216591U TW351474U (en) 1997-09-30 1997-09-30 Novel device to enhance image illuminance and evenness

Publications (1)

Publication Number Publication Date
TW351474U true TW351474U (en) 1999-01-21

Family

ID=21628691

Family Applications (1)

Application Number Title Priority Date Filing Date
TW086216591U TW351474U (en) 1997-09-30 1997-09-30 Novel device to enhance image illuminance and evenness

Country Status (2)

Country Link
US (1) US6049433A (en)
TW (1) TW351474U (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000287047A (en) * 1999-03-30 2000-10-13 Nec Corp Image reader
US10547753B2 (en) * 2016-03-25 2020-01-28 Seiko Epson Corporation Optical scanning device, transport device, feature detection device, medium determination device, sorting device, and medium scanning method
DE102017124572A1 (en) * 2017-10-20 2019-04-25 Bundesdruckerei Gmbh Illumination for optical document capture

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807856A (en) * 1969-09-26 1974-04-30 Scm Corp Illumination system for a photocopying machine
JPS5768801A (en) * 1980-10-17 1982-04-27 Fuji Photo Optical Co Ltd Linear lighting equipment
US4445774A (en) * 1982-04-30 1984-05-01 Xerox Corporation Document imaging system with improved exposure uniformity at image plane
US5523562A (en) * 1994-10-31 1996-06-04 Hewlett-Packard Company Optical scanner having enhanced depth of illumination
US5671084A (en) * 1995-03-24 1997-09-23 Eastman Kodak Company Illumination system for a film scanner

Also Published As

Publication number Publication date
US6049433A (en) 2000-04-11

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